<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="UTF-8">
        <title>Document</title>
        <script src="https://unpkg.com/vue@3/dist/vue.global.js"></script>
    </head>

    <body>
        <div id="app">
            <h1>hhh</h1>
            <p>hello vue3</p>
            <form></form>
        </div>
        <script>
            const {createApp}=Vue
            const App={

            }

            createApp(App).mount("#app")
        </script>
    </body>
</html>